Inorganica Chimica Acta p. 3218 - 3226 (2005)
Update date:2022-08-05
Topics:
Wilton-Ely, James D.E.T.
Wang, Ming
Honarkhah, Sanaz J.
Tocher, Derek A.
The Schiff base, 2-chlorophenylsalicylaldimine (HL1), is formed readily from salicylaldehyde and 2-chloroaniline. After deprotonation, this ligand is found to react as a bidentate mixed-donor chelate with the complexes [RuRCl(CO)(BTD)(PPh3)2] (R = H, CHCHC6H 5, CHCHC6H4Me-4, CHCHtBu, CCCPhCHPh; BTD = 2,1,3-benzothiadiazole) to form the compounds [RuR(L1)(CO) (PPh3)2] through displacement of the chloride and BTD ligands. An analogous reaction occurs with the osmium complex [OsHCl(CO)(BTD)(PPh3)2] to provide [OsH(L 1)(CO)(PPh3)2]. The compound [Ru(CHCHC 6H4Me-4)(L2)(CO)(PPh3)2] is formed through reaction of salicylaldehyde (HL2) with [Ru(CHCHC6H4Me-4)Cl(CO)(BTD)(PPh3) 2] in the presence of base. Two further ligands were investigated to extend the study to encompass 5- and 4-membered chelates; 8-hydroxyquinoline (HL3) and 2-hydroxy-4-methylquinoline (HL4) react with [Ru(CHCHPh)Cl(CO)(BTD)(PPh3)2] and [Ru(CHCHC 6H4Me-4)Cl(CO)(BTD)(PPh3)2] in the presence of base to yield the complexes [Ru(CHCHPh)(L3)(CO)(PPh 3)2] and [Ru(CHCHC6H4Me-4)(L 4)(CO)(PPh3)2], respectively. The crystal structure of [Ru(CHCHC6H4Me-4)(L1)(CO)(PPh 3)2] is reported.
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